
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
/*
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 */

/**
 *
 * @author Administrator
 */
public class lianXi {
    public static void main(String[] args) throws IEOxcepyion, IOException{
          
        InputStreamReader in2 = new InputStreamReader(System.in);
        BufferedReader in3 = new BufferedReader (in2);
        
        
        //in3.readLine()；
     
           
        System.out.print("请输入第一个数：");
        float first = Float.parseFloat(in3.readLine());
        System.out.println();
        System.out.print("请输入第二个数：");
        float second = Float.parseFloat(in3.readLine());
        System.out.println();
        System.out.print("请输入第三个数：");
        float third = Float.parseFloat(in3.readLine());
        System.out.println();   
        System.out.print("这三个数的和是：");
        System.out.println(first+second+third);
    }

}
